野外试坑注水试验,是一种简易方法来测定岩石口壤渗透系数的。它的优点能完全保持土的天然结构,保持所有影响其透水性的特点,而且设备简单,用费少,是值得重视和推广的,一、注水试验的原理在干燥的岩土或土处挖平注水试坑,放入金属铁环,在底部接触地方糊上粘土,使水只能向下渗透,如保持坑内水位不变,须经常注入水。单位时间渗入水量的测定,根据渗透速度 V=Q/F,又根据达 Field test pit water injection test, is a simple method to determine the permeability coefficient of rock mouth soil. Its advantages can completely maintain the natural structure of the soil, to maintain all the characteristics of its permeability, and the simple equipment, low cost, is worthy of attention and promotion, First, the principle of water test Dry soil or dig dig in the soil Flat water test pit, into the metal iron ring, paste the bottom of the place to paste the clay, so that water can only penetrate downward, such as maintaining the water level in the pit constant, must be injected into the water. Determination of infiltration of water per unit time, according to the penetration velocity V = Q / F, according to up